Marine speed propeller



(No Model.) 2 Sheets-sheet 1.

J.Is.'1 osT.

MARINE SPEED PROPELEEE.

Patented Fab. 17, 1885.

WITNESSES INVENTOR J'SZPOS. Mmc

By Emmy @n ms 2^ f (No M0891.) 2 shee1s-s`heet 2.

J. S. POST.

MARINB'SPEBD PRUPELLBR.

110.812.881. y Patented Feb. 17, 1885.

INVENTOH J'. f6'. Posh By 7221s ./ttorneys Z 52A N. PETERS1Pham'uxhogmpher. wnmugwn. Dlc.

rio

IINTTEE STATES PATENT OEETCE.

JUDSON S. POST, OF ST. LOUIS, MISSOURI.

MARINE SP'EED-PROPELLER.

SPECIFICATION 'forming part of Letters Patent No. 312,381, datedFebruary 17, 1885.

(No model.)

To all whom, t may concern,.-

Be it known that I, JUDSON S. POST, a citizen of the United States,residing at St. Louis, in the county of St. Louis and State of Missouri, have invented certain new and useful Improvements in MarineSpeed-Propellers; and I do declare the following to be a full, clear,and exact description of the invent-ion, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters orfigures of reference marked thereon, which form a part of this speciticati on.

Figure 1 of the drawings is a side view of my device. Fig. 2 is atransverse sectional view of the same. Fig. 3 is a transverse sectionaldetail view. Fig. 4 isasideview. Fig. 5 is a detail view. Fig. 6 is atransverse sectional detail view, and Figs. 7, S, 9, and l0 are detailviews.

rlhis invention has relation to the propulsion of boats; and it consistsin the construction and novel arrangement ot' devices, as hereinafterset forth, and pointed out in the claims appended.`

In the accompanying drawings, the letter A designates the hull of asteam-vessel.

B represents a vertically-adj nstable fulerumshelf, connected to thevessel on each side.

C indicates the folding paddle, which has its bearing in the fulcrumshelf', and D the rotary transmitter or triple wheel, whereby power istransmitted from the propeller-shaft E or other rotary shaft operatedbythe steamengine, or any other motive power, to the paddles. Thepropeller-shaft is the most convenient bearing for the belt-pulley whichoperates the transmitter. In some vessels, however, and in boats oflimited size. rotation may be communicated to the transmitter byanypower at hand.

The fulcrum-shelf B may be inade of wood or metal. For a steam-vessel itshould be made of metal and strongly constructed to withstand allstrain. work horizontal portion or shelf proper and the vertical braceportion connecting the shelf to the slide-bar F, which engages awell-bearing, G, sunk in the ship in the vertical direc- It consists ofthe opention. The shelf B is an open frame-work of great strength,having a central longitudinal slot or opening, a, under the middleportion of which extends, from front to rear, afulcrumhearing, b. is atthe side ofthe vessel, just above the water-line, and it should beadjusted to this position before leaving port. The shelf is connected tothe vertical portion or holder H by means of the sliding rods. tubes, orcolumns K, which pass vertically through bearings c of the shelf, andthrough bearings o of the holder plate or frame H, to which the slidebarF is connected. The shelf is made adjustable on the guide rods or tubesK, and is held in'position by means of pins d, passing throughperforations d in said rods or tubes after adjustment. The holder andits guides are :made of some extent, in order to distribnte the strainthat may be brought upon them by the working-paddles through thel shelf.The fulcruin bearing I) on which the pair of folding paddle-sectionsworks runs parallel to the central vertical plane of the vessel, being,however, slightly inclined outward aft, to influence the paddle-bladesbelow, while working, to force the water outward from the hull. Thedepth of the bar D is greater than its thickness, and from its upperedge it extends downward on each side, curving so that it is narrower atits lower edge. This fule-rumbar is on each side clear of obstructionfor a distance equal to the breadth of the paddle-blade, so that thefolding paddle can be passed downward astride of the bearing, its bladesrespectively passing through the openings at the sides of the bar. Itsvertical extension is designed to prevent the paddle from swaying out ofits oscillating course during the rolling of the vessel. bar is aboutthe middle of the shelf, or sufficiently far toward its outer edge toobviate any danger of the open vpaddle fouling with the hull of thevessel. The pulley-blocks f,

The location of the fulcrum-shelf The location of the fulcrum- 9othrough which the wire or other ropes, called 9 5 IOO be arranged on alevel, or nearly so, with the points of connectionl to the paddle-armswhen at the extreme endsof their oscillating movements, the pulley aftbeing usually somewhat lower than its mate forward to allow for thedownward turn of its paddle-arms. Except to provide surface-protectionfor the paddles, it is not necessary to extend the shelves outward fromthe vessels hull much beyond the fulcrum-bearings.

The folding paddle C may be made of wood, iron, steel, or other propermaterial. When made of metal, the blade portions should belongitudinally corrugated to give the fullest strength with theleastweight and flexibility'.

The folding paddle consists, ostensibly, of two paddles orpaddle-sections, C', which are permanently connected together by hinge,or link connections. In their lower portions, below their fulcrum-rests,the paddle-sections are entirely disconnected.4 Iny the larger sizest-he upper or body portions, g, of the paddles are made separate fromthe blade portions h, and they are secured together by bolts, rivets, orscrews. The body portions of the paddlesections are formed withhorizontal rounded or rolling bearings lc on their inner or contiguousedges. The upper bearings k are a little larger than the lower bearings,being so made in order to incline the blades below`toward each other.These bearings and the connecting devices permit a freelateral swingingmovement of each section to the extent of a quarter of a circle. Thismovement is checked when the blades are opened by the hinge-con,-ncctions and the abutting edges of the body portions of said sections.Vhen the blades are closed, the closing movement is checked by theconnections and, by the stress of the water through which the blades aremoved. The shoulder-bearings respectively merge into each other, asshown. Each paddle-section is provided with an arm, G', which extendsoutward horizontally at right angles to the length of the paddle and inthe plane of its breadth. Each folding paddle can be raised from thefulcrum-shelf on board the vessel at any time, and can be easily loweredin position to bear nponthe saddle-bar b.

The connections with the driving mechanism are made through the arms G',whose leverage is such as to effect the opening and closing of thepaddle-sections, the operation of the arms beingsupplementedby theaction of the water, which as the blades are moved forward tends toclose them, and as they are moved backward to force them open. Themovement of the paddles backward and forward is communicated from theshaft of the propeller, or other shaft operated by a steamengine orother ,motive power in larger vessels, through a rotary transmitter, D.The transmitter is strongly made of wood, iron, steel, or other metal,and its proportions depend on the work required, the diameter of therotary wheel depending, however, in all cases upon the distancetraversed by the points of attachment of the motor-connections tothearms of the paddle-sections. The position of each transmitter isbetween the brace of paddles on opposite sides of the ship with which itis in connection. It is located in the central line of the ship, foreand aft, and the Wheel is axially mounted athwart ship, so that itrevolves at right angles to the plane of the keel. A belt passing from apulley, H', on the propeller-shaft over the pulley-bearing I of thetransmitter communicates motion thereto. By shifting the belt to a loosepulley, which may be on the propeller-shaft, the rotation of thetransmitter may be stopped. This transmitter or triple wheel works instrong bearings bolted to the ships deck-timbers. Its middle portion isa broad pulley, I, on each side of which is a pulley, K', havingguide-flanges. The interval between the said flanges on each side of themiddle or belt bearing is comparatively small, being only sufficient toafford play for the small pulleys pp, which are seated inbearingsnearthe margins of the disks. Each pulley K consists,therefore,of the rotating disks and the pulleysp p, which are arrangedat the opposite ends of a diametrical line; but in one of the pulleys Kthis diametrical line is at right angles to the line connecting thepulley-bearings p p of the other pulley K. Above the triple wheel areplaced, in bearings of the transmitter-frame, take-up rollers L, whichmay be provided at their ends with ratchet-wheel and pawl holdingdevices. From one of these rollers extends the wire or other rope,called rein,7 a', downward between the rim portions of the frontwheel-pulley K', over its pulleys p p and through guiding-pulleys o,securely fastened to the deck and guards of the vessel. in properposition, to the fulcrum-shelf, where it engages the front pulley ofsaid shelf, and, passing backward, is connected to the arms ofthepaddle-sections. By means of thisrope or rein the paddles are moved toforce their blades backward in the' water and at the same time to openthem. From the other roller a similar rope, z, passing down between therim portions of the rear pulley K', engages its pulleys p p, and thencepasses through guiding-pulleys o, fastened to the vessel, to the rearpulley of the fulcrum-shelf, whence it extends to the arms of thepaddle-sections,to which it is fastened in rear. By this rope or reinthe paddle-blades are moved forward in the water and closed. Jointedconnections w are fastened to the ends of the ropes or reins a and z,and connect them to the ends of the paddle-arms, which regulate theiropening and closing when working. Tubular guides or other coveringdevices should be employed to prot-ect the operating-ropes where theyare exposed on the deck. When the triple'wheel is rotated, the diameterbearings or pulleys p p of the front and rear pulleys K' will passalternately from the horizontal to the vertical position, and onwardfrom the vertical to the horizontal posi- ICO IIO

tion continuously. By this movement the ropes or reins a and e arealternately drawn upward from the deck-guides, and therefore actalternately to pull the upper portions of the paddles forward orbackward. At'the same time one of the diameter-pulleys is moving towardthe horizontal position, taking up the ropes c, the other one is movingtoward the vertical position and thus paying out the ropes z. So in thenext quarter-revolution of the transmitter the ropes z are taken up andthe ropes a paid out In this manner the transmitter operates to give twocomplete strokes of the paddles at each revolution.

I prefer in large vessels t0 make the holder H adjustable, ashereinbefore described, so that when the vessel is in port said holder,with its fulcrunivshelf and paddle, can be elevated as high as may bedesirable. For this purpose strong stanchions M are provided, extendingvertically from the edge of the upper or spar deck, to afford bearingsfor pulleys l), over which extend the hoisting rope or chains N, whichare connected with the holder I'I by passing through pulleys R in Fig.LI. The hoisting wire, rope, or chains may be operated by windlass orstrong ratchet-wheel and pawl, Y, Fig. 10, water-tight wells G, in Fig.2, extending down vertically inside and adjoining the ships side fromthe upper or spar deck, to engage and hold the tang or slide-bar of thepaddle-fulcrum shelf-holder, of proper size and shape for easy verticalmovement of said tang or sliding bar,when rei quired. Vith said verticalstanchions are davits at fore and aft end of said wells, topped bypulleys, and grooved for secure vertical sliding of said tang-bar.

Having described this invention, what I claim, and desire to secure byLetters Patent,

1. The folding paddle consisting of lateral sections having disconnectedblades and hinged or link connected upper portions formed with upper andlower rounded bearings, fulcrumshoulders, and arms extending outward inthe planes of the blades at right angles to their length, substantiallyas specifled.

2. rIhe fulcrum-shelf having alongitudinal opening, provided with a foreand aft saddlebar or fulcrum-bearing extending downward to keep thepaddles true, and the transverse chucks in front and rear of saidopening, substantially as specified.

3. The rotating triple wheeltransmitter having a middle pulley-bearingfor a drive-v belt, and on each side thereof a pair of guidedisksbetween which are diametrically-opposite pulleys, near the rims thereof,the diameter connecting the pulleys of one wheel being at right anglesto the diameter connecting the pulleys of the other wheel, substantiallyas specified.

vet. The combination, with the triple wheeltransmitter, of the ropesconnecting the same to the paddle-arms, the paddles, and the fulcrumshelves having fore and aft pulleys through which said ropes, calledreins, pass.

5. The combination, with a brace of folding paddles adapted to vibrateone on each side of a boat, of a rotary transmitter engaging bydiameter-bearings the forward pulling ropes or reins, a, and therearward pulling ropes or reins, z, to tighten these ropes alternatelywhile paying out the loose ropes, to effect the Vibration or oscillationof said paddles, substantially as specified.

6. rI he combination, with the rotary trans- Initter and thevertically-adjustable fulcrumshelf, of a folding paddle, its front rope,a, and rea-r rope, z, and the take-up rollers seated iu bearings of theframe of the transmitter, substantially as specied.

7. A boat provided with a-brace or braces JUDSON S.

lVitnesses:

LOUISE E. DAvENroRT, JULiUs B. CURTis.

